The SENSOREX DO1200-T is a dissolved oxygen sensor using optical fluorescence technology with a luminescent dye sensing cap. It measures 0 to 20 mg/L O2 with ±0.1 mg/L accuracy. Fully submersible with an IP68 rating, it has a <60-second response time and operates between 0 to 50°C on a 12-30V DC power supply. It outputs a 4-20mA analog signal for long-term monitoring in water treatment, aquaculture, and food processing.